Oxyrhynchus volubilis Brandegee Oxyrhynchus volubilis Brandegee, Univ. Calif. Publ. Bot. 4: 271. 1912 sec. Flora of North America Editorial Comitee 2023=Oxyrhynchus alienus Piper, J. Wash. Acad. Sci. 14: 47. 1924 syn. sec. Flora of North America Editorial Comitee 2023